Machine fob making cement blocks



March 21, 1933.

J. P. ROSE, JR 1.902523 .MACHINE FOR MAKING CEMENT BLOCKS Filed Feb. 24. 1932 2 Sheets-Sheet l d mg w J PHo9e,Jn

March 21, 1933. I J p RQSE, JR 1.902523 MACHINE FOR MAKING CEMENT BLOCKS Patented Mar. 21, 1933 UNITED STATES JOSEPH P. ROSE, JR, OF WELLFLEET, MASSACHUSETTS uncnmn ron MAKING CEMENT BLOCKS Application filed February 24, 1932. Serial No. 594,831.

This invention relates to molds for molding concrete articles orarticles of like character and particularly to a mold designed for the molding of concrete blocks used in the manufacture of well curbing cisterns, cesspools, catch basins, etc.

The general object of this invention is to provide a block mold of this character which is very simple, can be readily operated and in which the mold is disposed in a horizon tal position with thecores inserted upward through the mold when the concrete or other material is tamped in place and in which the coresare withdrawn before the moldis turned upon its side for the removal of the molded article. p

A further object is to operable means whereby the cores may be projected upward through the mold while the mold is being filled andwhereby the cores are locked in their projected position until they are, manually unlocked and retracted. A further objectis to provide a mold of this character having its end walls laterally movable so that when'themold is turned upon its side to remove the block, these end walls may be readily opened, thus releasing the palletand permitting the ready removal of the molded block, means being provided whereby the end walls are locked in their closed position against any lateral pressure when the mold is turned into a filling position. L

Other objects will appearin the following description.

.My invention is illustrated in the accompanying drawings, wherein Figure 1 is a top plan view of a mold constructed in accordance with my invention; Figure 2 is a section on the line 2 2 of Figure 1; v 7

Figure 3 is a fragmentary plan view of the latchand the supporting means therefor; r V

Figure 4 is a fragmentarysection' on the line 4-4 of Figure 2; 1

Figure 5 is a vertical section on the line 55 of Figure 2, and I Figure 6 is a like vview to Figure 5 but provide manually the course of showing the core bars raised and locked in their lowered position.

bracket for supporting the wedge. I

Referring to these drawings, it will be seen that the mold proper which is designated generally A is supported in a suitable frame comprising the -'supporting legs 10 and 11, the transversely extending brace 12 and the vertical members Figure 7 is a detailed elevation of the 13 which extend parallel to the legs 11 and in spaced relation I thereto. Mountedupon the legs Eat the upper ends thereofarethe outwardly extending'supporting brackets 14 having vertically adjustable pallet supporting studs 15 which are screw-threaded so that they may be each independently verticallyadjustable.

Mounted upon the side Walls 16 of the frame, which side walls are carried, of course, by the legs, is the plate-17 which is apertured at 18. Disposed below this plate and mounted between the legs guides 13 is a vertically shiftable plate 19 which carries upon it two parallel cores 20 which are illustrated as cylindrical in form,

I though they may have any other shape in cross" section. These cores are movable through the apertures 18 and the element Hinged to the-element l7 isthe mold 11 and the proper comprising the bottom 22 andfthe rear wall 21. The bottom as illustrated in upper face longitudinally to the ends of the bottom walls 23, the hinges being The front wall Figure 2 hasits, curved. Hinged designated '25." and 25 have upperand'lower edges which are curved to conform to the curvature of the surface 22 if arcuate bloc molded. The inside faces of are provided, one with a transversely extending recess .26, and the other with a transversely extending rib or fillet 27'.

These are for the purpose of forming a groove on one end of the concrete block and a tongue 0n the other end of the concrete block; .Attached to the outer surfaces of the end walls 23 are the transversely extending metallic strips 28 which are angu ks are to be the walls 23 or pallet is I Thefront and rear walls 21- larly bent at their extremities as at 29 (see particularly Figure 1) so that when these end walls are turned to an approximately vertical position, these angularly bent ends of the strips 28 will extend over the front and rear walls of the mold and lock the front and rear walls in parallel position. Attached to these end walls and extending downward therefrom are the bars 30, the inner faces of which are beveled as at 31 and coacting with the beveled faces of these bars are the wedges 32 which are attached to the outer faces of the walls 16. These wedges act in connection with the beveled faces 31 to force the lower ends of the bars 30 outward and thus force the end walls 23 inward into their molding position.

? The cores 20 are raised and lowered by the following. means :Extending between the cores 20 is a rod 33 and also extending through these walls 1 6 at a point remote from the cores is a shaft 34, the outer ent of which is provided with a handle 35 whereby theshaft may be operated. This shaft carries an arm 36 as shown best in Figure 6, which arm extends below the rod 33. This rod at its extremity is connected to a transverse rod 37 which is also attached to the cylinders as shown in Figure 2 by means of a coiled contractile spring 38. When the handle 35 is raised, the shaft 34 will be rotated in a counter-clockwise direction and the arm 36 will lift the cores 20. In order to lock the cores in a lifted tion, I mount upon the plate 12, 39 pivoted at 40 upon this plate, this latch having pivotally connected thereto a rod .41, the inner extremity of which is pivoted to a pair of ears on flange 42 of the latch 39. The rod 41 is formed of two sections connected by a turnbuckle 43 anda coiled compression spring 44 is disposed around rod 41 and bears against 43. Mounted upon shaft 34 is an arm 45 having an eye 46 at its extremity through which rod 41 loosely asses. A head 47 bears against this eye. It will be obvious now from Figures 3, 5 and 6that when shaft 34 is turned in a counterclockwise'direction arm 36 will lift the cores 20 and when shaft 34 is turned in the opposite direction, the cores willbe depressed tensionon spring 38 and by engagement with boss 48 on plate 19. c

Attached to the plate 19 upon which the cores are carried is a vertical rod 49 which passes through a guide yoke 50 carried'by the frame of the machine. This, when the plate 19 is depressed, passesthrough a hole 51 formed in the element 12 as shown in Figure 2. Now when the cores are raised by rotating the shaft 34, the latch 39 is swung forward by the arm 45 and as soon as the rod 49 has passed beyond the opening 51, the web of the latch will be forced into place below this rod 49 as shown in Figure 2, thus holding the rod and cores raised. In lowering the cores, the shaft 34 is given a reverse rotation. The cores cannot move downward because the latch 39 is below the lower end of the rod 49, but the spring 338 permits the shaft 34 to rotate in a counter-clockwise direction and this acts, of course,to withdraw the latch from beneath the rod 49. As soon as the latch is withdrawn the cores drop from the position shown in Figure 5 to-the position shown in Figure 6. Then the mold may be turned on its side, as shown in Figure 6. The arms 30 are shifted laterally by the attendant to open the ends of the mold and the molded article may be withdrawn with the pallet 25 which has constituted one wall of" the mold. Preferably this pallet is" loose so as to permit it to be removed with'the molded article, but I do not wish to this.

mold and replaces the pallet and turns the mold back to the posi ion shown in Figure 5, the cores being retracted, of course, at this time and as he does so, the lower ends of the arms 30Vwill strike the'wedges 32, thus forcing the end walls 23 fully inward and locking them in their molding positions.

It will be seen that inthis construction, the cores are vertical and thus the tamping of the material from which the block is formed is straight down just a few blows being needed to make a perfect block.

Thecores are in place before the mold box is filled and in filling the mold box thematerial is put in at once.

is the case in'mold blocks having horizontal c'oreswhere half the material is put in, then be limited. to When the article has been removed, l the attendant closes the end walls 23 of the This provides fora much quicker formation of the block than ilo cores are withdrawn while the mold is being 7 turned to its discharge position.

Y In operating this mechanism, the mold is filled and tamped, the cores are then withdrawn and then the mold is turned over on its side to the position shown. in Figure 6, the end walls are released, and the molded article withdrawn and the mold is turned back to its initial position again, the end walls closed, the cores, lifted and the mold again filled. Preferably, thoughnot necessarily, the rear portion of the machine will be housed, as llustrated in Figures 5 and 6 so as to prevent any down on the-shaft 34 or 1ts attached parts.

In Figure 1, the mold box is shown as concrete from flowing I being provided with a detachable strip 21a which may be taken off when makingblocks which are not recessed upon one" face; It will be noted from Figure 1 that" the handle is counterbalanced by the rearward extension 35a so as to take the weight off the springs 38. From Figure 6 it will be seen also that the arm 36 when it moves down engages the boss or protuberance 48 and thus engages the plate 19 at the middle thereof. Thus the pressure against this plate will be adjacent the center and not toward the outer edge. The wedge 32 is mounted upon a bracket 32a shown in detail in Figure 7 which bracket is slotted so that the wedge may be adjusted. The turn buckle 43 is provided for the purpose of adjusting the length of the rod 41 so as to secure a proper actuation of the parts.

I claim 1. A cement block machine including a supporting frame, a block mold having a bottom, the bottom being hinged to the supporting frame for movement from a position with its bottom horizontal to a position with its bottom vertical, the bottom of the mold having a core aperture, a vertically movable core guided in the supporting frame, a manually operable shaft having an arm operativelyengaging the core to lift or lower it, and a latch shifted automatically into latching position operatively engaging the core when the core is fully raised and holding it raised andautomatically releasable upon an initial actuation of the core lowering means.

2. A cement block machine including a supporting frame, a block mold hinged to the frame for movement from a horizontal to a vertical position, the bottom of the mold having a core aperture and a vertically movable core guided in said frame and movable upward through said aperture into the mold, a shaft having an arm operatively engaging the core to lift it when the shaft is rotated, a latch swingable into position beneath the core, means connected to said shaft for swinging the latch into position beneath the core for preventing the downward movement of the core, and means permitting an initial movement of said shaft in a direction to depress the core to thus first release the latch and then depress the core.

3. A cement block machine including a supporting frame, a block core hinged to the frame for movement from a horizontal to a vertical position, the bottom of the mold having a core aperture,a core mounted for vertical movement in said supporting frame and having a rod extending down vertical cores disposed within the frame, g

a rod extending a a member supporting said cores and vertically guided in the frame,

downward from said member, a manually j V operable shaft having an arm, a rod connecting said cores and beneath which said V an operative spring connection bearm engages upon an upward movement of the arm,

tween the arm and the cores to permit an I initial downward movement of the arm be fore the cores are pulled downward, a latch mounted for swinging movement into a position beneath said rod when the cores are fully raised, an arm on the shaft having an eye, a rod passing loosely through the latch and through said eye, a sleeve bearing against the latch and surrounding the rod,

spring between and a coiled compression said sleeve and the eye.

5. A cement block machine including a supporting frame, a block mold hinged to theframe for movement from a horizontal to a vertical position, the bottom of the mold having a core aperture and a vertically movable core guided in said frame and mov-. able upward through said aperture into the mold, a shaft having means operativelyengaging the core to'lift it when the shaft is rotated a latch swinging into position beneath the core when vthe core is fully raised, means connected to said shaft for swinging the latch into such position to thereby prevent the core from moving downward and for swingingthe latchout of suchposition, an initial movement of the shaft in a direction to depress the core acting to first release the latch and then depress the core. 7

In testimony whereof I hereunto afiix my signature.

JOSEPH P. ROSE, JR.

from it, a manually operable shaft having an arm operatively engaging the core to positively lift when the shaft is rotated in 7 one direction, means acting to depress the 7 core by said arm upon a contrary rotation of the shaft after theshaft has made an initialmovement, a latch movable into position beneath the rod attached to the core when the core has been fully raised, an 

